The authors would like to thank David Kennedy of
the Center for Morphometric Analysis at MGH, for
providing the fully-annotated brain images.
The work was done as part of the EPSRC/MRC funded
MIAS-IRC grant, and the EPSRC IBIM grant (GR/S82503/01) . An
EPSRC grant (GR/S48844/01) for Oscar Camara
helped support studies that were based on ground
truth.